Development

LICENSE

@@ -1,4 +1,4 @@
-Copyright (c) 2018 Pulchritudinous
+Copyright (c) 2019 Pulchritudinous
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

app/code/community/Pulchritudinous/Queue/Helper/Data.php

@@ -2,7 +2,7 @@
 /**
  * The MIT License (MIT)
  *
- * Copyright (c) 2018 Pulchritudinous
+ * Copyright (c) 2019 Pulchritudinous
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

app/code/community/Pulchritudinous/Queue/Model/Config.php

@@ -2,7 +2,7 @@
 /**
  * The MIT License (MIT)
  *
- * Copyright (c) 2018 Pulchritudinous
+ * Copyright (c) 2019 Pulchritudinous
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal

app/code/community/Pulchritudinous/Queue/Model/Iterator.php

@@ -0,0 +1,211 @@
+<?php
+/**
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Pulchritudinous
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+?>
+<?php
+/**
+ * Collection iterator.
+ *
+ * @author Anton Samuelsson <samuelsson.anton@gmail.com>
+ */
+class Pulchritudinous_Queue_Model_Iterator
+    implements Iterator
+{
+    /**
+     * Number of rows collected each time.
+     *
+     * @var integer
+     */
+    const PAGE_SIZE = 50;
+
+    /**
+     * Entity collection.
+     *
+     * @var Varien_Data_Collection
+     */
+    protected $_collection;
+
+    /**
+     * Current item.
+     *
+     * @var Varien_Object|null
+     */
+    protected $_data;
+
+    /**
+     * Current slice.
+     *
+     * @var array
+     */
+    protected $_slice = [];
+
+    /**
+     * Is initialized.
+     *
+     * @var boolean
+     */
+    protected $_initiated = false;
+
+    /**
+     * Is valid.
+     *
+     * @var boolean
+     */
+    protected $_isValid = false;
+
+    /**
+     * Current slice index.
+     *
+     * @var integer
+     */
+    protected $_index = 0;
+
+    /**
+     * Current page.
+     *
+     * @var integer
+     */
+    protected $_page;
+
+    /**
+     * Initial page.
+     *
+     * @var integer
+     */
+    protected $_initPage;
+
+    /**
+     * Last page.
+     *
+     * @var integer
+     */
+    protected $_lastPage;
+
+    /**
+     * Initialize collection iterator.
+     *
+     * @param  Varien_Data_Collection $collection
+     *
+     * @throws Mage_Core_Exception
+     */
+    public function __construct(Varien_Data_Collection $collection)
+    {
+        $collection->setPageSize(self::PAGE_SIZE);
+
+        $this->_initPage    = $collection->getCurPage();
+        $this->_page        = $collection->getCurPage();
+        $this->_lastPage    = $collection->getLastPageNumber();
+
+        $this->_collection = $collection;
+    }
+
+    /**
+     * Load more data into slice.
+     *
+     * @return Pulchritudinous_Queue_Model_Iterator
+     */
+    protected function _loadMore()
+    {
+        $this->_index = 0;
+        $this->_slice = [];
+
+        if ($this->_page > $this->_lastPage) {
+            return $this;
+        }
+
+        $collection = $this->_collection
+            ->setCurPage(++$this->_page)
+            ->load();
+
+        foreach ($collection as $item) {
+            $this->_slice[] = $item;
+        }
+
+        $this->_lastPage = $this->_collection
+             ->getLastPageNumber();
+
+        $this->_collection->clear();
+
+        return $this;
+    }
+
+    /**
+     * Reset collection to initial state.
+     */
+    public function rewind()
+    {
+        $this->next();
+        $this->_collection->setCurPage($this->_initPage);
+    }
+
+    /**
+     * Return current item.
+     *
+     * @return Varien_Object|null
+     */
+    public function current()
+    {
+        return ($this->valid()) ? $this->_data : null;
+    }
+
+    /**
+     * This method returns the current entity id.
+     *
+     * @return integer
+     */
+    public function key()
+    {
+        return ($this->valid()) ? $this->_data->getId() : null;
+    }
+
+    /**
+     * Get next entity.
+     *
+     * @return boolean
+     */
+    public function next()
+    {
+        $this->_data = next($this->_slice);
+
+        if (false === $this->_data) {
+            $this->_loadMore();
+            $this->_data = next($this->_slice);
+        }
+
+        $this->_isValid = (false !== $this->_data);
+
+        return $this->_data;
+    }
+
+    /**
+     * This method checks if the next row is a valid row.
+     *
+     * @return boolean
+     */
+    public function valid()
+    {
+        return $this->_isValid;
+    }
+}
+